Last year, Gwyneth said her secret to staying in shape is a consistent exercise regime, regular detoxes and the occasional weekend treat.

The star is an avid fan of Tracy Anderson - author and multi-platform wellness entrepreneur whose clients also include Madonna and Shakira.

She told The Telegraph: 'Still, when I first started working with Tracy, finding motivation was hard. She advised me to think of exercise as an automatic routine, no different from brushing your teeth, to avoid getting distracted. Now it is part of my life.'

Male contingent: Tony Danza and Liam Neeson brought some testosterone to the occasion

The blonde mother-of-two explained how important routine is and that she exercises Monday to Friday at 10am and always sticks with it.

However, although she advises people to stay away from processed foods, she recommends 'programmed treats,' to avoid the temptation to binge.

'I often have a glass of red wine in the evening and smoke a cigarette on a Saturday,' she said. 'I love those moments because they are just the right amount of naughty. That balance keeps you vibrant. You have to live your life, after all.'

Flapper style: Anne Hathaway wore an black tasseled top and trousers as she posed inside the event

Her main man: Anne cosied up to her husband Adam Shulman, who wore a stylish plaid suit

Having a laugh: Anne perched on Alan Cummings' knee as they sat at a table